package Thread2;

//不使用泛型
class MyBlockingQueue2{
    private String[] data = null;
    // 队首
    private int head = 0;
    // 队尾
    private int tail = 0;
    // 元素个数
    private int size = 0;

    public MyBlockingQueue2(int capacity){
        data = new String[capacity];
    }

    public void put(String elem) throws InterruptedException {
        synchronized (this){
            while(size >= data.length){
                // 队列满了,需要等待
                this.wait();
            }
            data[tail] = elem;
            tail++;
            if(tail >= data.length){
                tail = 0;
            }
            size++;
            this.notify();
        }
    }

    public String take() throws InterruptedException {
        synchronized (this){
            while(size == 0){
                // 队列为空,需要等待
                this.wait();
            }
            String ret = data[head];
            head++;
            if(head >= data.length){
                head = 0;
            }
            size--;
            this.notify();
            return ret;
        }
    }
}
public class Homework6 {
    public static void main(String[] args) {
        MyBlockingQueue2 queue = new MyBlockingQueue2(1000);

        Thread producer = new Thread(() -> {
            int n = 0;
            while(true){
                try {
                    queue.put(n+"");
                    System.out.println("生产元素" + n);
                    n++;
                } catch (InterruptedException e) {
                    throw new RuntimeException(e);
                }
            }
        });

        Thread consumer = new Thread(() -> {
            while(true){
                try {
                    String n = queue.take();
                    System.out.println("消费元素" + n);
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    throw new RuntimeException(e);
                }
            }
        });

        producer.start();
        consumer.start();
    }
}
